Chaplet making machine



Nov. 1, 1932. c. HOBART CHAPLET MAKING MACHINE Filed April 15. 1929 ,1 v 7 Sheets-Sheet l INVE NTOR Nov. 1, 1932.

L. C. HOBART CHAPLET MAK ING MACH INE 7 Sheets-Sheet 2 Filed April 15. 1929 INVENTOR Nov. 1, 1932. L. c. HOBART 1,385,349

CHAPLET MAKING MACHINE Filed April 15. 1929 7 Sheets-Sheet 3 INVENTOR Nov. 1, 1932. L. c. HOBART CHAPLET MAKING MACHINE Filed April 15, 1929 7 Sheets-Sheet 4 lNVENTOR Nov. 1, 1932. c. HOBART 1,835,349

CHAFLET MAKING MACHINE Filed April 15. 1929 7 Sheets-Sheet 5 INVENTOR Nov. 1, 1932. c. HOBART CHAPLET MAKING MACHINE Filed April 15. 1929 7 Sheets-sheet 6" INVENTOR 'Nov. 1, 1932. 1.. 0. HOBART 1,885,349

CHAPLET MAKING MACHINE Filed April 15, 1929 7 Sheets-Sheet 7 INVENTOR Patented Nov. 1, 1932 UNITED STATE PAT NT OFFICE.

LOUIS G. HOBART, OF AVALON, PENNSYLVANIA, ASSIGNOR T GEM MANUFACTURING i COMPANY, A CORPORATION OF PENNSYLVANIA CHAPLET MAKING MACHINE Application filed. April 15,

This invention relates to chaplet making machines, more particularl to apparatus for forming sheet metal members and securing said members on the end of a wire for use as core supports in foundry work. i It is among the objects of this invention to provide apparatus of the above designated character which shall be adapted to feed a sheet metal strip to a perforating punch, per forate the strip, cut-off a predetermined length and transfer same to a conveyor wheel, feed wire to a scoring die, cut-off member and holding jig, scarfing the end of the cut-off wire, assembling the perforated sheetmem- 5 beron the end of the wire, and riveting the end of the wire to secure the sheet member thereon, all in a continuous operation- It is another object of'the invention to improve and simplify the operating mechago nism of chaplet making machines to substantially increase their quantity output.

These and other objects will become more apparent from a consideration of the accompanyin g drawings, constituting a part hereof,

9-5 in which like reference characters designate like parts and in which Figure 1 is a front elevational view of a machine embodying the principles of this invention; Figure 2 a top plan View thereof with the punch mecha- 39 nism removed; Figure 3 an enlarged sectional elevational view; of the principal operating mechanism; Figure '4 a sectional ele-vational view taken along the line I VIV, Fig. 1; Fig. 5 an end view diagrammatically illusure 6 a sectional elevational view taken along the line VIVI, Fig. 1; Figure 7 a detail view in front elevation of a jigwheel; Figure 8 a similar view ofv a conveyor wheel and 40 ratchet mechanism; Figure 9 a detail view in elevation of a wire cutting mechanism; and Figures 10 and 11 a top plan and side elevational view respectively of a chaplet produced by the apparatus;

Referring to igures 1 and 2 of the drawings, the structure therein, illustrated comprises a rectangular frame structure 1 supported on pedestals 2 having a shaft'3' journalled centrally in said frame. A pair of 50 crank shafts 4are j-ournalled in frame 1 with trating cam and indexing mechanism; Fig

1929. ser al no. 355,014.

their axes disposed transversely of the longitudinaLaXis of .shaft 3. A main drive shaft 5 is journalled in brackets 6 and 7 at the rear of frame l'and connected by gearing 8 and 9 to actuate shafts 4. As shown in Figure 4 a cam shaft 10 is journalled for rotation I a pitman 15 operated by a crank shaft 16 which is geared by wheels 17 and 18 to a shaft 19 operated through geared connections at 20 by drive shaft 5. On crank shaft16 are mounted cams 21, 22, 23, 24 and 25, Figure 4, operating levers hereinafter. described. Ram 13 is provided with a perforating punch 26 and a shear 27, Figure 3, which cooperate with a combined die and shear block 28. Ram 13 is further provided with a cut-out portion 29, Figure 4, inwhich is sliolably mounted a block 30 carrying a finger 31 movable in a guide 32. A lever 33 is mounted for oscillating movement in a bracket 34 below die-block 28, the crank being connected by a link 35 to a bell crank 36 carrying a cam follower '37, a finger 38 is connected through a universal oint 39 to the endof lever 33 for movement in a guide 40, finger 38 being coaXially alined with finger 31 to cooperate therewith.

A bracket 41 extends beyond die block 28 and is provided with an inclined end for journalling a transfer dial 42, Figures 1, 3 and 8.

'VVheel' 42'is provided with spring fingers 43 in angularly spaced relation which are integral with or mounted on a flared or dished 8, a lever 45 is mounted on a stud shaft 46 on which dial 42 is journalled. Lever 45 is movable independently of dial 42 by a link 47 with which is it pivotally connected at 48, link'47 being pivoted at 49 to a crank lever 50 actuated by cam 25. A pawl 51 is carried by lever 45 and rests on stop 52 against which it is biased by a spring 53. In this position it successively engages the pins 54 9o portion 44of the wheel. As shown in Figure of which are shown in Figure 1.

projecting on dial 42 and for every movement of lever 45 wheel 42 is indexed one position corresponding to the angular spacing of fingers 43, there being a pin 54 for each pair of fingers 43 of the wheel.

Sheet metal strip material is fed to the punch and die by the following mechanism: A guide 56 is provided at the material feeding end of the machine. A gripper block 57 is mounted on a guideway 58 the block being movable through a segment gear v59 mounted on a rocker shaft 60 which is oscillated by a lever 61 having a link connection 62 with a lever 63 that is connected at one end with a link 64. Link 64 is pivotally connected to a T-bolt 65 which is movable in the slot 66 of a rocker 67 that is loosely mounted on shaft 16 and rocked by acam follower 68 actuated by cam 21. The position of bolt 65 in slot 66 determines the swing of segment gear 59 and consequently the length of travelof block 57. Mounted on thelatter is a lever7 0 pivoted at 71 and carrying a roller 72. Lever and block 57 are provided with grippers 73 for engaging a strip 74 which is fed to the punch. A lever 75 is pivoted at 76 and connected by a link 77 to a lever 78 having a cam follower 79 actuated by cam 22. Lever 75 engages roller 72 of lever 70 whereby the strip material 74 is firmly engaged by grippers 73 in response to cam 22. Movement of lever 75 is limited by stop 80 which is adjustable for the different gauge or thickness of the strip material 74.

Underneath the mechanism for feeding strip material 74 is a wire feed and scoring de vice which consists of the following mechanism: A guide block 81 movable through a segment gear 82 mounted on a rocking shaft 83 which is actuated through a lever and link connection 84 and 85 respectively by a lever 86 which is oscillated by a cam follower 87 which engages a cam 88 mounted on shaft 4. Link 85 is adjustably connected in a slot 89 of lever 86 to vary the swing of gear 82 to vary the rate of feeding the wire 90. Adj acent the feed mechanism just described is a scoring device 91 having cutters which engage and disengage wire 90 to notch or score it as at 91, Fig. 11, responsive to oscillating movement of member 91 effected through lever 92 by a cam of shaft 10 at the rear of the machine. A second scoring device 93 is mounted adjacent member 91, the cutters 94 This member is oscillated through linkage 95 operated by a cam on shaft 10, and the depth of the scoring in wire 90 may be adjusted by means of set screws 96 whereby links 92 and 95 are lengthened or shortened as desired to vary depth of the cut.

In longitudinally spaced relation with the scoring member 93 is a wire cutter 97 func tioning as a shear through the relative movement of the members 98 and 99, the latter being shown in detail in Figure 9. The member 99 is actuated through a lever 100 having a cam follower 101 in engagement with a cam 102 on shaft 10. The cutter 99 is adjust-ably connected through stop 103 and adjustable seat 104.

Cooperating with the wire cutter 99 and conveyor wheel 42 is a rotatable jig 105, Figure 7, mounted on the end of shaft 3. The jig is provided with angularly spaced radial slots 106 corresponding in spacing and number to the pairs of fingers 43 of wheel 42.

Die blocks 107 are permanently secured to the disk by screws 108 and movable blocks 109 are disposed in the slots to cooperate with blocks 107, said movable. and stationary blocks being notched at their engaging faces at 110 to form grlppers for holding the wire after it is cut. Movable blocks 109 are retained in the disk by a bottom support 111, V

Figures 1 and .3, and a brake 112 is adapted to engage blocks 109 at their top position on disk 105, the blocks being made to protrude slightly beyond the periphery of disk 105 when in engagement with blocks 107. Brake 112 is pivotally connected at 113 to a pivot block 114 fastened to the side frame 1 and at its other end it is pivoted at 115 to a link 116 which is connected to a lever 117 actuated by cam 118 of shaft 10 through follower 119.

Brake 112 is provided with adjustable dogs 120 for engaging the ends of blocks 109 which are slightly rounded for this purpose.

Between thestrip feed and punching and the wire feed and cutting mechanisms is a ram 121 movable longitudinally in a guide 122 the ram being pivotally connected at 123 to a pitman 124 mounted on a crank 125 of shaft 4. Ram 121 carries a plurality of dies 126, 127 and 128 in spaced relation as shown,

in Figure 4, corresponding to the spacing of openings 110 of wire jig 105. The member 126 is adapted to scarf the end of the cut ofl wire 90 to form a shoulder 129, Figure 11. Member 127 is provided with a pin 130 which engages the perforations of the cut-off strip material to transfer the same from the fingers 43 of conveyor wheel 42 to the scarfed end of wire 90 as shown in Figure 11, pin 130 being movable and recedes when the wire held in jig 105 enters the perforation of the material 131 being transferred. Member 128 rivets the end of the wire after member 131 has been assembled thereon thus completing the chaplet which is subsequently pushed out of jig 105 by a finger 132 secured to a rod 133. Bod 133 is subjected to longitudinal movement and is timed by a cam 134 on shaft 10.

The plate 105 is indexed and timed with conveyor wheel 42 by means of the following mechanism: Referring to Figure 5 of the drawings, shaft 3 is provided with a disk 136 having notches 137 adapted for engagement by pawls 138 and 139. Pawl'138 is provided with a roller 140 movable in a slot 141 of an arm 142 which holds it in operative position.

Pawl 138 is pivoted at 143 to lever 144 having a cam follower 145 engaging a cam 146 which is rotatable through shaft 147 actuated by gear wheels 148 and 149 from drive shaft 5. Pawl 139 is operated through lever 150 havchine is briefly as follows: Strip material 7 4 a of sheet metal in width corresponding to the size of the chaplet to be made and of any suitable thickness or gauge, is fed from a supply reel through guide 56 and passed between gripping jaws 73 to' the die'block 28.

Wire of suitable gauge is passed through feed mechanism 81 and the scoring devices 91 and 93 into cut-off 97. The drive shaft 5isconnected to a suitable prime mover such as an electric motor and the drive pulley is preferably connected to shaft 5 through a clutch mechanism 5a. When the clutch is engaged, shaft 5 rotates and the foregoing described mecha-- nism is actuated whereby the following sequence of operations occurs. The perforating die 26 pierces a hole in strip 74 and upon the subsequent advance of the strip feeding mechanism, which is set by adjustmentoflink 64, in slot 66 of the cam operated rocket 67 to advance a distance corresponding to the Width of the strip, the shear 27 will cutoff a rectangular or square portion of sheet metal having a perforation in the center thereof. As the strip material is sheared, it is engaged by fingers 31 and 38 and placed 1 between spring fingers 43 of transfer dial 42'and by the cam operated movement of lever 45 which is timed with the reciprocating movement of the punch ram 13, the dial 42 is indexed to advance a distance equal to the spacing of fingers 43 for each stroke of the punch. o

Simultaneously with the shearing, and transferring of the sheet strip material wire is fed by mechanism -81 through scoring mechanism-9l and 93 and the cut-off 99 to the jig plate in which the pieces cut off to suitable length, are inserted in openings in blocks 10? and 109. I hen jig 105 is indexed oneposition as heretofore explained, the cut off wire is acted upon by the scarfing member 126 which is advanced to engagement with the end of the wire by theshoulder 129 on the wire shown in Figure 11, and upon the movement of jig 105 t'o its next indexed position, the member-127 will engage a perforated punching 131 and operations te against any perforating,"

place it on the scarfed end of Wire 90. Upon the subsequent indexing of the jig the assembled wire and punching will be alined with the riveter 128 which acts upon the end of the Wire to securely fasten'th'em'. Y

bling and riveting, brake 112 is depressed by its cam to lock the slide blocks 109 in the jig and the latter is likewise secured against I -mo vement by action of the brake. When the; -riveted chaplets reach the lower position in the jig slide blocks 109,. drop by action of gravity against the retaining member 111 and the rod1'33 presses fingers 132'against wire 90, forcing chaplet' out of from which'it; 1

drops into a container placed below the-jig.- The speed of operation is dependent upon the accurate setting of the machine and the securing of the jig plate when the several rminatingin the'riveting of the: 1"

chaplets-occurs.

against movement which would cause j am; mlng of the machine.

The brake makes possible highjspeedoper- I ation as itv effectively holds the jig plate a The strip feed, perforating and shearing 'operations, as well as the wire feed, scoring and cutting operations, are coordinated by the cam movements as explained and-the indexing of conveyor dial 42 and'jig. plate 105 is coordinated with movement of ram 121 by their'respective cam and ratchet mechanisms.

{All movable partsof the machine are actu ated by a common drive shaft which guards parts of the machinegetting outf of time. V It is evidentfrom the foregoing description of this invention that apparatus madein accordance therewith provides efficient means for the manufacture of chaplets in produc tion quantities and at minimum cost. 7

Although one'embodiment-of the invention has been herein illustrated and described, it will be obvious to thoseskilled in the art that I modifications may bemade in the details of construction and in the arrangement of the several cooperating'parts without departing from the principles herein set forth. I claim herein'as my invention I 1.- In a chaplet machine the combination of its a reciprocating punch and means for feeding J strip material thereto, wire scoring and cutting members and means for feeding wire thereto, a forreceiving the cut off wire I lengths, a transfer dial for receiving the strip punchings, means for forming a shoulder on the wire'in the jig, means'for transferring the strip punchings from said dial to the wire ting members and means rfor.feeding'wire, 5

thereto, a transfer dial for receiving thestrip 7 in said jig and means for fastening the punchi ings on the ends of the wire. movement of ram 121. Member 126 produces punchings, a jig for receiving the cut off Wire, a reciprocating ram having dies in cooperative alinement With the Wire in said jig,

means for indexing said dial and jig and for coordinating the movements thereof and means for sub ecting sa1d ram to reclprocatory movement in synchronism With the indexing movements of said jig.

3. In a. chaplet machine the combination of a reciprocating punch and means for feeding strip material thereto, Wire scoring and cutting members and means for feeding Wire thereto, a transfer dial, means on said dial for yieldingly engaging the strip punchings, a for receiving the cut off Wire, said conveyor and jig being arranged so that the holding means of the dial are in alinement with the Wire holding means of the j ig, and means for transferring the punchings from said dial to the end of the Wire in said jig.

i. In a chaplet machine the combination of a reciprocating punch and means for feeding strip material therto, Wire scoring and cutting members and means for feeding Wire thereto, a transfer dial, means on said dial for yieldingly engaging the strip punchings, means for engaging the punchings and placing them in the holding means of said dial, a jig for receiving the cut off Wire, said dial and jig being arranged so that the holding means of the Wheel are in alinement With the Wire holding means of the jig, and means for transferring the punchings from said Wheel to the end of the Wire in said jig.

5. In a chaplet machine the combination of a reciprocating punch and means for feeding strip material thereto, Wire scoring andcutting members and means for feeding Wire thereto, a transfer dial, means on sa1d dial for yleldingly engaging the str1p punchings, a

jig for receiving the cut off Wire, said dial and ig bemg arranged so that the holdlng means 7 of the Wheel are in alinement With the Wire holding means of the jig, and means for transferring the punchings from said dial to the end of the Wire in said ig and means for indexing said dial and jig and for coordinating the indexing movements. I

In testimony whereof I have hereunto set my hand this 4th day of April, 1929 at Southin gton. Connecticut.

LOUIS C. HQBART. 

